Hay-press.



C. H. MELVIN.

HAY PRESS.

APPLICATION FILED JUNE 6. I914.

1,147,742. Patented July 27, 1915.

2 SHEETS-SHEET I.

Wifnassaa; @vanlmr:

COLUMBIA PLANOGRAPH c0. WASHINGTON. D c

C. H. MELVIN.

HAY PRESS.

APPLICATION FILED Junie. 1914.

Patented July 27, 1915.

2 SHEETS-SHEET 2.

W: masses CHARLES H. MELVIN, OF MOLINE, ILLINOIS, ASSIGNOR T0 DAIN MANUFACTURING COMPANY OF IOWA, OF OTTUIVIWA, IOWA, A CORPORATION OF IOWA.

HAY-PRESS.

Specification of Letters Patent.

Patented July 27, 1915.

Application filed June 6, 1914. Serial No. 843,406.

To all whom it may concern:

Be it known that I, CHARLES H. MELVIN, a citizen of the United States, residing at Moline, in the county of Rock Island and State of Illinois, have invented certain new and useful Improvements in Hay-Presses, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to hay presses of the general type in which the plunger is operated by gears, as distinguished from presses in which a rotating cross-head is used for that purpose. It has more particularly to do with presses having a single gear reduction between the plunger and the source of power.

The object of my present invention is to provide improved mechanism for actuating the plunger in a baling-press in which by the use of a single gear reduction the plunger may be operated so as to give it a slow speed and increased leverage on the compression stroke and a fast speed and decreased leverage during its idle stroke.

I accomplish this object as illustrated in the drawings and as hereinafter described.

What I regard as new is set forth in the claims; o

In the drawings,-Figure 1 is a partial side elevation of a press embodying my improved construction;'Fig. 2 is a horizontal section on line 2-2 of Fig. 1; Fig. 3 is a partial side elevation showing another position of the parts shown in Fig. 1, someparts being in section; and Fig. 4. is a plan view of the parts in the relation shown in Fig. 3.

Briefly stated, my present improvements comprise a plunger having a pitman by which it is actuated, the pitman bein reciprocated and also rocked by means 0 a concentrically-mounted gear, (or pair of gears), which is driven from a pinion carried by a shaft rotated from any suitable motor, such as an internal combustion engine, which may be, and preferably is, mounted on the frame of the press. Power is transmitted from the gear or gears referred to to the pitman by means of an eccentrically-pivoted link, or rather pair of links, which are rotated as the gear rotates through connecting-rods which are pivotally connected to the outer portion of the gear or gears,that is to say, at a greater or less distance from the axis thereof,and are pivotally connected directly or indirectly with the free end portions of said links. In practice, the links, the connectingrods and the pitman are all connected at a common point by a single pivot, to which is also connected a strap which operates the usual feeder-arm. The result is that as the gear or gears rotate, the pivotal connection of the pitman with the links and connectingrods, which constitutes the point of application of power to the pitman, moves toward the aXis of the gears on the compression stroke, and consequently rotates more slowly but transmits more power to the plunger during that period. On the return stroke the pivotal connection moves out from the axis of the gears and consequently moves faster and transmits less power to the pitman.

Referring now to the drawings for a detailed description of the embodiment of my invention therein illustrated-4 indicates the frame of the hay-press, which is of the usual construction.

56 indicate a pair of large gears, which are centrally mounted on bearin s 7 -8 suitably supported in the frame of the press.

910 indicate the eccentrically-mounted links referred to, which are provided with pivots 11--12, respectively, journaled eccentrically of the gears 5-6 in suitable bearings provided at the opposite side of the axis of said gears from the baling-chamber. The outer end portions of said links are fitted upon a pivot 13 arranged between the two gears, as shown in Fig. 2.

14l15 indicate the connecting-rods referred to, which are pivotally mounted on the outer portions of the two gears 5-6, and are also fitted upon the pivot 13. 16 indicates the pitman, which carries a plungerhead. The free end of the pitman is also fitted upon the pivot 13, preferably between the bearings of the links 9-10, as shown in Fig. 2.

17 indicates the usual feeder-arm, which is mounted to rock upon a pivot 18 suitably supported upon the frame of the press by brackets 19, as shown in Fig. 1. 20 indicates a strap connecting one end portion of the feeder-arm 17 with the pivot 13.

21 indicates a shaft suitably journaled in the frame of the press and carrying pinions 2223 which mesh, respectively, with the gears 5-6, as shown in Fig. 2. The shaft 21 carries a pulley 241, which is driven by a belt from any suitable source of power.

From the foregoing description it will be seen'that when the shaft 21 is driven the gears 56 will rotate, the direction of their rotation being indicated by the arrow in Fig. 1. As said gears rotate, the connectingrods 1415 will be carried around with them, consequently causing the links 9-10 to rotate upon their pivots 1112 which, as

described, are eccentric to the axis of the pivot 13 is indicated by dotted lines in Fig. 3, from which it will be seen that the point of application of power to the pitman moves toward the axis of the gears 56 from the position shown in Fig. 3 until it reaches the position shown in Fig. 1, and then moves away from such axis until it again arrives at the position shown in Fig. 3. During the operation of the machine, the feederarm is operated to feed the hay into the press at the proper time, being withdrawn during the compression stroke.

That which I claim as my invention, and desire to secure by Letters Patent, is,-

1. A baling-press, comprising a compressing-member, a rotating-member, a member pivotally mounted eccentrically to the axis of said rotating-member and connected with said compressing-member, and a swinging connection between said rotating-member .nected with said eccentric member, for varying the speed and power imparted to said compressing-member by said rotating- 3. A baling-press, comprising a plunger, a rotating-member, a link mounted eccentrically to the axis of said rotating-member and connected with said plunger, and a swinging connection between the rotatingmember and saidlink, for varying the speed and power imparted to the plunger by said rotating-member.

4. A baling-press, comprising a plunger, a rotatingmember, a link mounted eccentrically to the axis of said rotating-member, a pivot connectingsaid link with saidplunger, and a connecting-rod connecting said pivot with the outer portion of said rotatingmember and acting to mox e said pivot toward and from the axis of the rotatingmember as the latter rotates.

5. A baling-press, comprising a plunger, a gear adapted to rotate about a central axis, a link mounted eccentrically to the axis of said gear, a pivot connecting said link with the plunger, and a connecting-rod connecting said pivot withthe outer portion of the gear.

CHARLES H. MELVIN.

I member.

Witnesses:

'Jnssm L. SIMsER, WV. G. DUFFLELD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

